pytorch

cd26d027 - [doc] Fix info on the shape of pivots in `torch.lu` + more info on what and how they encode permutations. (#46844)

[doc] Fix info on the shape of pivots in `torch.lu` + more info on what and how they encode permutations. (#46844) Summary: As per title. Pull Request resolved: https://github.com/pytorch/pytorch/pull/46844 Reviewed By: VitalyFedyunin Differential Revision: D24595538 Pulled By: ezyang fbshipit-source-id: 1bb9c0310170124c3b6e33bd26ce38c22b36e926